Spool



?atented Aug?n 2, 1932 UNITED STATES 'PTENTI 'OFFICE .GEORGE W. B'UNGAY, OF PLAINFIELD,- NEW JERSEY, ASSIGNOR TO ALUMINUM COMPANY OF AMERICA, OF PITTSBUBGH, PENNSYLVANIA,' A CORPORATJION OF PENNSYLVANIA j srooL V Application filed May' 11, 1928. fSeriaI No. 276,902.

This invention relates to a spool and more easily mutilatedand which is capable of withparticularly "to a spool on ,which artificial standing any of the ingredients that may be silk, such as cellulose .acetate, is wound. present in the cellulose acetate silk.

In the manufacture of artificial silk and i It is a further object of this invention to especiall celh-lose acetate silk, the filaments provide a spool made of a metallic'materal or threa s as they issue from the spinning cell such as aluminum or alloy thereof. v are'wound on spools or bobbins. They are Further objects will appear from the folsubsequently' rewound on spools, during lowing description, 'appended claims and the which operation the threads may be twisted. accompanying drawing, in which:

m Prior to my invention, these spools were Figure 1 is a Vertical section of a spool conmade of wood and, due to this, had many sttuting my invention, and undesirable features and disadvantages. In Figure is an end -view thereof showing r the winding operation, the first several layers a key-receiving or looking member. are wound on the spool in a more or less con- Referrng to the drawing, in which like 15 fused and interwound state. Due to this conreference numerals designate like parts, there fused interwinding, these several layers of is illustrated a spool constituting my inventhreads cannot be unwound in the usual'mant10I and wherein the reference numeral 1 ner and constitute what is known in the art desgnats a hollow body member. Dispos'ed as waste. Before the spool can again be used at opposite ends thereof are fianges 2 and 3.

20 this waste must be removed. In practice it The flange 2 is of the usual type. It com- .is removed by cutting the layers of threads prses an nc'hned surface l adjacentthe end with some sharp cutting edge, such as a razor of the body member 1 and terminatng in a blade. In so cutting, the spool is frequentl small horizontal surface 5; The oppositely cut and mut-,i1ated, wh b it i d r d dsposed'flange 3 comprses a vertcal shoul- 25 more susceptible to splintering. The mutilar 6 J CeH he body member 1 and a horion of the spool, as Well as the splintering, aantal surface7 adjacent the shoulder. On its has a tendency to injure, break or cut the D f e he flaigemember 3 s provided artificial silk threads. Furthermore, in the with lugs or pro ectons 8, the pu o of course of winding or spooling, the artificial Whch W1 1l be heremafter explained.

aosilk threads wound on the spool cut grooves In the nteror of the body member 1, and therein. These grooves, in addition to reng y f rmed therewith at the end addering the spool more susceptible to sp1inter-' Jacent g ge IS a pg 9 adapted i injure d b k th th d If to receve a drvng shaft. Postoned on the the threads have not been thoroughly freed g 8 and n he i r fa e of h flange 3 35 from the Compounds used in the manufacture iS a y-' g member looking member 35 of the' silk the Wooden spool may be affected Which IS removably, though securely,

th b i dditi t th 'i j t th tened to the spool by means of screws or bolts threads, the above described defects makesthe n hg the h g Th k y life of the spools very short and the number m r 10 IS PI'OVIded W tWO i r ca y 40 of replacenents large. In a cellulose' acetate dISPOSBd y portons 12 ap e to ngo silk plant many thousands of spools are emg -g the g y. the y member iS ployed and it is thus seen that the use and POSitiOIled olland flange I the replacement of Wooden spools is`very expenter of the key-rece ving member 10 there is a sive. I have found that I can eliminate and l hore 13 Whlch IS p d t r ive a 45 overcome all the above-mentioned disadvan dr ving shaft of the winding OF spooling matages by making a spool of met l h as luchne. Adj acent the hole or bore 13 and diaminum or an alloy thereof. metrically disposed are two slots or key o en It is, therefore, an object of this invention ings 14 which are adapted to receive a loc ing to produce a spool adapted to be used in the member on the driving shaft whereby the 5 artificial silk industry which will not be spool is locked to and driven' by said shaft. 10

By this construction the key-receiving member is easily applied and removed from the spool. This is a great advantage and expedites thevpreparation of 'the spools for in sertion in the machine. p

In the interior of the body member 1, adjaeent the flange 2, there is a bushing 15. This bushing is securely fastened to the body member 1 by means of pins or screws 16. It has a hole or bore 17 through the center thereof whereby it is adapted'to receive a driving shaft or some holding mechanism. The

. upper portion of the bushing 15 has a cutaway portion forming a shoulder or flange 19, which, when in place in the interior of the body member 1, forms an annular space which may, if desired, receive an element on the shaft or holding mechanism whereby the. spool is prevented from oscillatory or vibratory movement. x

The spool above-described may be made of any suitable metal, preferably aluminum or an alloy thereof. Of course, it is obvious that various methods may be employed to manu facture the spools, but I find that I can obtain satisfactory results by die-casting. When this method is employed the spool, after removal from the dies, is finished and polished.

In operation, since the spool is made of aluminum or alloy thereof, none of the compounds that may be present'in the cellulose aeetate silk will have any affect thereon. Due to the hardness of the spool, the removal of the waste from the spool and the threads themselves will be prevented from mutilating, grooving or cutting the spool as in the case of Wooden spools. If the spool should be marred in any way, the marks would be very fine and small and would have no detrimental effect on the silk. They also could be readily removed by polishing. Furthermore, in my invention, if the locking member is injured, it does not render the whole spool useless. By my construction the looking member may be removed and a new one inserted without destroying or lessening the life of the spool.

I do not intend to limit myself to the exact details above described except as set forth in the claims, since it is obvious that modifications may be made without departing from the nature of the invention.

I claim:

1. A metallic body member, ends thereof, bushings disposed within and at opposite ends of said bod member adjacent said flanges, one of said ushings having a portion of its outer end cut away, and an exspool comprising a hollow V tending shoulder whereby when in position 'an annular space is provided.

2. A metallic spool comprising a hollow body member, fianges disposed on opposite.

- endsthereof, bushings disposed within and flanges disposed on opposite at oppositeends of said body member adjacent said fianges,`one of said bushings having a portion of its outer end cut away and an extending shoulder whereby When in osition an annular space is provided, a loc 'ng member disposed adjaoent the other bushing, said looking member provided with a central bore and oppositely opposed slots.

3. A metallic spool comprising a hollow body member, flanges disposed on opposite ends thereof, bushings disposed in and at opposite ends of said body member adjacent saidfianges, one of s aid portion of its outer end cut away and an extending shoulder whereby when in position an annular space is provided, and a locking member disposed adjacent the other bushing.

In testimony whereof, I have afiiXed my Signature to this specification.

GEORGE W.- BUN GAY.

bushings having' a los 

